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rostedt

Steven Rostedt

Reply to @vbabka@mastodon.social
@vbabka @kernellogger @hrw @workchronicles
I do one slide per bullet point
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rostedt

Steven Rostedt

Edited 10 months ago

-Werror is great, until you need to debug an older kernel 😛

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rostedt

Steven Rostedt

This meme perfectly describes pretty much every interaction between Linus Torvalds and myself!
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rostedt

Steven Rostedt

I think this is the first time I ever used the quadratic equation for a real purpose since college! 🤔

https://lore.kernel.org/lkml/20250204172045.3a5d8d01@gandalf.local.home/

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rostedt

Steven Rostedt

Edited 1 year ago

Not every day you can say you were complemented by Linus Torvalds saying you had an “interesting idea”. Always look for those silver linings!

https://lore.kernel.org/linux-trace-kernel/20241217131717.0fa5a21b@gandalf.local.home/T/#med0de149d3f7d1d4648406c277272ff6ea9eab04

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rostedt

Steven Rostedt

Fixing up a messed up Debian upgrade where I needed to reinstall, I had to hit “Select this only if you know what you are doing”. I don’t know what I’m doing, but I had to hit it to do what I needed to get done 😛

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rostedt

Steven Rostedt

Another useful email to the Linux Plumbers mailing list!

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rostedt

Steven Rostedt

Kernel Recipes (which is always held in Paris) is thinking of changing their logo.
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rostedt

Steven Rostedt

Reply to @monsieuricon
@monsieuricon @pavel @kernellogger
And we are very nervous about that possibility!
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rostedt

Steven Rostedt

Last night at the real-time celebration, Thomas Gleixner handed Linus Torvalds his official pull request of the real-time patch on paper "wrapped in gold with a ribbon around it''
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rostedt

Steven Rostedt

Reply to @cas@social.treehouse.systems
@cas

Yes it does affect non-RT kernels. Like all other RT features added to upstream, it improves vanilla Linux. The graphics developers wanted this change. It will allow for things like a blue screen of death where you can see an oops from a graphical interface.
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rostedt

Steven Rostedt

THIS IS IT!!!

The last hurdle for PREEMPT_RT being merged into mainline has just removed by this pull request. Leaving the door open for PREEMPT_RT to be added to 6.12!

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rostedt

Steven Rostedt

Reply to @ljs
@ljs @oleksandr what do you call it when compiled with LLVM? 🤔
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rostedt

Steven Rostedt

Reply to @ljs
@ljs @oleksandr technically that's not C but the C pre-processor (CPP).
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rostedt

Steven Rostedt

Reply to @vegard@mastodon.social
@vegard @kernellogger my own experience is that after I add a new feature during the merge window, I'll get a bug report that was actually from an older change before the merge window. Why did this happen? Because the new feature started stressing code paths that were not stressed before and uncovered bugs that existed for a long time. Hence you may see more bug fixes for old bugs early in the rc releases.
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rostedt

Steven Rostedt

Reply to @kernellogger@fosstodon.org
@kernellogger Kent's interactions reminds me of another file system creator from long ago, whose name I will not mention.
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rostedt

Steven Rostedt

Reply to @a3f@fosstodon.org
@a3f yep. The biggest difference is the interface. It shows up as another instance in the tracefs file system that can be enabled or read pretty much like any other instance. You can even use `trace-cmd` to start it, read it and even extract it. Although it will need some tweaks for extraction.
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rostedt

Steven Rostedt

With my new persistent memory mapped ring buffer, were I can retrieve the tracing buffer from the previous boot that crashed, I was able to debug a recent issue. To do this, I added code to allow trace_printk() to be directed to the persistent ring buffer, along with enabling the printk console trace event (writes all printk()s to the tracing ring buffer), I was able to get the perfect idea of what was happening that lead up to the crash!

https://lore.kernel.org/lkml/20240823013902.135036960@goodmis.org/

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rostedt

Steven Rostedt

Edited 1 year ago

ANNOUNCE Just released:

trace-cmd v3.3 and libtracecmd 1.5.2

libtracefs v1.8.1

libtraceevent v1.8.3

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rostedt

Steven Rostedt

A tribute to Daniel Bristot de Oliveira from Linux Plumbers. https://lpc.events/blog/current/index.php/2024/07/06/in-memory-of-daniel-bristot-de-oliveira/

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